Details

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BUY UM0505DR LF https://www.utsource.net/itm/p/12609896.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN	-	4.75	5	5.25	V
Output Voltage	VOUT	-	3.3	-	-	V
Output Current	IOUT	-	-	500	-	mA
Efficiency	畏	@ 5V, 3.3V, 500mA	-	85	-	%
Dropout Voltage	VDROPOUT	@ 500mA	-	0.5	-	V
Quiescent Current	IQ	-	-	10	-	渭A
Load Regulation	-	0mA to 500mA	-	1	-	%
Line Regulation	-	4.75V to 5.25V	-	0.5	-	%
Ripple Rejection	-	@ 1kHz	-	60	-	dB
Operating Temperature	Toper	-	-40	-	85	掳C
Storage Temperature	Tstg	-	-65	-	150	掳C

Instructions for Using UM0505DR LF

1. Input Voltage (VIN):

   • Ensure the input voltage is within the range of 4.75V to 5.25V to avoid damage to the device.

2. Output Voltage (VOUT):

   • The output voltage is fixed at 3.3V. No external components are required to set this voltage.

3. Output Current (IOUT):

   • The device can provide up to 500mA of output current. Ensure the load does not exceed this limit to prevent overheating or damage.

4. Efficiency:

   • The efficiency of the regulator is typically 85% when operating at 5V input, 3.3V output, and 500mA load.

5. Dropout Voltage:

   • The dropout voltage is typically 0.5V at a 500mA load. This means the input voltage must be at least 0.5V higher than the output voltage to maintain regulation.

6. Quiescent Current:

   • The quiescent current is typically 10渭A, which is the current consumed by the regulator itself when no load is present.

7. Load Regulation:

   • The load regulation is typically 1%, meaning the output voltage will vary by 1% over the load range from 0mA to 500mA.

8. Line Regulation:

   • The line regulation is typically 0.5%, indicating the output voltage will vary by 0.5% over the input voltage range from 4.75V to 5.25V.

9. Ripple Rejection:

   • The ripple rejection is typically 60dB at 1kHz, which helps in filtering out input voltage ripples.

10. Operating Temperature:

    • The device is designed to operate within a temperature range of -40掳C to 85掳C. Ensure the ambient temperature stays within this range to avoid thermal stress.

11. Storage Temperature:

    • The storage temperature range is -65掳C to 150掳C. Store the device in a dry place to prevent moisture damage.

12. Mounting and Handling:

    • Handle the device with care to avoid mechanical damage. Follow standard ESD (Electrostatic Discharge) precautions during handling and installation.

13. PCB Layout:

    • Ensure proper PCB layout to minimize noise and improve thermal performance. Use a ground plane and keep input and output capacitors close to the regulator.

14. Capacitors:

    • Use appropriate input and output capacitors as specified in the datasheet to ensure stable operation. Typical values are 10渭F for both input and output.

15. Thermal Considerations:

    • If the device is expected to operate near its maximum current, consider adding a heatsink or ensuring adequate airflow to dissipate heat.

By following these guidelines, you can ensure reliable and efficient operation of the UM0505DR LF linear regulator.

(For reference only)